Tyre Mounting (Clincher, Folding Tyres) - BMW Mountain Bike Enduro Owner's Manual

If you have a puncture whilst riding, do not pull the whole inner
tube out of the tyre. Leave the valve sticking through the rim,
inflate the inner tube and bring it close to your ear. In most
cases you can hear the air coming out. At home you can help
yourself with a bucket of water where you can locate the hole
by the bubbles. When you have found the hole, look for the cor-
responding place on the tyre and check it. Often, you will find
a foreign body sticking in the tyre, which ought to be removed.
Otherwise another puncture can occur.
When you have removed the tyre, you should also check the rim tape
(a). It should lie squarely in the trough of the rim, covering all spoke nip-
ples, and should not be torn anywhere or brittle. In the case of double
wall rims the tape must cover the entire rim base, but it should not be so
broad as to stand up along the inside edges of the rim trough. Rim tapes
for this type of rim should only be made of textile or durable plastic. If
you are in doubt or if you have any questions, please contact a bicycle
specialist shop of your trust!
Replace spoilt rim tapes immediately.
If the fabric of the tyre is destroyed by the perforating object,
replace the tyre as a precaution.
Dismounting a Rohloff rear wheel requires special handling.
Please follow the enclosed Rohloff instructions!
a
44
b

7.5.3 Tyre mounting (clincher, Folding Tyres).

When mounting a tyre make sure no foreign matter, such as dirt or sand,
gets inside the tyre and you do not damage the inner tube in the proc-
ess.
Slip one bead of the tyre onto the rim (b). Using your thumbs, press the
bead over the edge of the rim and then around the entire circumference.
This should normally be possible without using tools.
Stick the valve of the tube through the hole in the rim (c). Inflate the inner
tube slightly so that it becomes round and push it into the tyre all the way
round. Make sure not to leave any folds in the tube.
To finish mounting the tyre, start at the opposite side of the valve. Using
your thumbs, press as much of the second bead of the tyre over the
edge of the rim as you can (d). Make sure the inner tube does not get
pinched and squashed between tyre and rim. You can prevent this by
pushing the inner tube into the hollow of the tyre with a finger as you
work along.
Work the tyre into the rim, approaching the valve symmetrically from
both sides. Towards the end, you will have to pull the tyre vigorously
downwards to make the already mounted portion of the tyre slip towards
the deepest part of the rim trough. This will ease the job noticeably on
the last centimetres.
c
d